© 2019 Jackson Labs Technologies, Inc. 21
Micro-JLT GNSS™ User Manual
3.3.15 GPS:PJLTS <int> [0,255]
This command instructs the Micro-JLT GNSS™ to send the proprietary NMEA string $PJLTS every
N seconds, with N in the interval [0,255]. This proprietary command includes information on the
GNSDO lock, oscillator status, and other telemetry status. The following is example output of the
PJLTS sentence:
$PJLTS,3.39,3.62,21341,6,2.4627123,82.0904,1.3E-12,0,12,0x0*52
This command has the following format:
GPS:PJLTS <int> [0,255]
The format of the $PJTLS command is:
$PJLTS,aaa.aa,bbb.bb,ccc,d,e.eeeeeee,ff.ffff,g.gEhh,iii,jj,kkkk*[checksum]0x0d 0x0a
where
aaa.aa is the filtered UTC offset in ns,
bbb.bb is the raw UTC offset in ns from the time interval counter,
ccc is the number of captured input 1PPS signals,
d is the lock status,
e.eeeeeee is the EFC voltage,
ff.ffff is the EFC percentage (0% to 100%),
g.gEhh is the estimated frequency accuracy (similar to 100s ADEV) in scientific notation,
iii is the seconds in holdover,
jj is the number of satellites tracked, and
kkkk is the health status explained in the SYNC:HEALTH? query shown in Section 3.6.16 .
3.3.16 GPS:PJLTV <int> [0,255]
This command instructs the Micro-JLT GNSS™ to send the proprietary NMEA string $PJLTV every
N seconds, with N in the interval [0,255]. This sentence includes information about the 3D velocity,
GPS time and week, and UTC leap second offset. The following is example output of the PJLTV
sentence:
$PJLTV,-1,-3,3,26,515247,1986,18*42
This command has the following format:
GPS:PJLTV <int> [0,255]
The format of the $PJTLV command is:
$PJLTV,aaaaa,bbbbb,ccccc,ddd,eeeeeeeee,ffff,gg*[checksum]0x0d 0x0a
where
aaaaa is the velocity in the x direction (cm/s),
bbbbb is the velocity in the y direction (cm/s),
ccccc is the velocity in the z direction (cm/s),
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